IEC 60974-8:2021

Overview

IEC 60974-8:2021 - Arc welding equipment - Part 8: Gas consoles for welding and plasma cutting systems specifies safety and performance requirements for gas consoles used with combustible gases and oxygen. It applies to gas consoles that supply gases for arc welding, plasma cutting, gouging and allied processes in non‑explosive atmospheres. The standard covers both external gas consoles and consoles internal to a welding power source (internal consoles require the power source to meet IEC 60974-1 as well). Edition 3 (2021) cancels and replaces the 2009 edition and introduces updates driven by IEC 60974-1:2017, new rating‑plate requirements and updated instructions.

Key topics and technical requirements

Important technical topics addressed by IEC 60974-8:2021 include:

• Scope and definitions for gas consoles and system components.
• Tests: type tests and routine tests to verify performance and safety under defined conditions.
• Electrical safety: insulation, clearances, creepage distances, dielectric strength, insulation resistance, touch current limits and protection against electric shock in normal and fault conditions.
• Thermal requirements: heating tests, temperature measurement and limits for temperature rise.
• Mechanical and enclosure requirements: design, protection against fire/explosion in non‑explosive atmospheres, enclosure purging and IP considerations.
• Gas lines and fittings: requirements for hoses, tubing, fittings and mandatory leak testing and gas‑line purging procedures.
• Control circuits: safe design and testing of control wiring and interlocks.
• Marking, rating plate and instructions: conformity with rating plate provisions aligned to IEC 60974-1 and clear user instructions (Clause 13.2 updates).
• Connections for plasma cutting torches and mechanized plasma system considerations.
• Informative annexes, including a mechanized plasma system diagram and an example rating plate layout.

Practical applications and who uses this standard

IEC 60974-8 is essential for:

• Manufacturers and designers of gas consoles, welding power sources and integrated plasma cutting systems - to design compliant, safe products.
• Test laboratories and certification bodies - to perform type and routine testing and verify conformity.
• System integrators and OEMs - to select and install compliant gas supply consoles within welding/plasma systems.
• Procurement and safety engineers in fabrication shops, shipyards, automotive and construction - to specify equipment that meets international safety and performance requirements.
• Regulatory and compliance teams - to align documentation, marking and instructions with international norms.

Related standards

• IEC 60974-1 (Welding power sources) - to be used in conjunction with Part 8 for internal consoles.
• IEC 60974-10 (EMC requirements)
• IEC 60664-1 (Insulation coordination)
• IEC 60529 (IP code for enclosures)
• ISO 10225 (Marking for gas welding equipment)
• IEC Electropedia (terminology references)

Keywords: IEC 60974-8, gas consoles, arc welding equipment, plasma cutting systems, welding gas console safety, IEC standard, rating plate, gas hose leak test.